Unified Payment Gateway

One Gateway.
Every Way Your Customers Pay.

Arcaud brings crypto and traditional payments together for DHRU Fusion resellers — non-custodial USDT across multiple networks, plus PayPal, Stripe, and many more providers — all through one signed API and one hosted checkout page.

Get Started Free See How It Works

Crypto & Cards One Signed API Hosted Checkout DHRU Fusion Ready

Non-Custodial USDT

Accept USDT, Settled Straight to Your Wallet

One signed API call generates a uniquely-priced invoice and a hosted checkout page — payments land directly in your own wallet, we never take custody of your funds.

Non-Custodial HMAC-SHA256 Secured BEP20 & TRC20 Binance C2C

Features

Everything you need to get paid, any way

Built for resellers and platforms who want crypto and traditional payments in one place, without integrating every provider themselves.

Multiple Payment Gateways

USDT, QvaPay, Stripe, and PayPal, side by side on the same checkout — connect the ones you need from your dashboard.

₮

Non-Custodial Settlement

Every crypto payment goes straight to a wallet you control. Arcaud only watches the chain and confirms — we never hold your funds.

Unique-Amount Detection

Every invoice gets a unique reserved amount, so incoming transfers match automatically — no manual reconciliation of who paid what.

HMAC-Secured API

Every request is signed with HMAC-SHA256 and a timestamp window, with optional per-key IP whitelisting on top.

◉

Hosted Checkout

A clean, branded page with a QR code and live status — no payment UI for you to build or maintain.

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DHRU Fusion Ready

A drop-in gateway module for DHRU Fusion resellers — upload two files, paste your keys, done.

Webhooks

Get a signed callback the moment a payment is confirmed on-chain, so your own system can react automatically.

Developer First

Live in a few API calls

No SDK required — Arcaud is a plain signed HTTP API.

Create an account & API key

Sign up and generate a Merchant ID, API Key, and Private Key from your dashboard.
Add a receiving wallet

Connect the wallet or account you want payments settled to — add more anytime.
Create an invoice

Call POST /api/v1/invoices with an HMAC-SHA256 signature — get back a hosted checkout URL.
Get paid

Your customer pays on-chain, and Arcaud sends a signed webhook the moment it's confirmed.

$ curl -X POST https://arcaud.com/api/v1/invoices \
  -H "Content-Type: application/json" \
  -H "X-Merchant-ID: M-YOURID" \
  -H "X-Timestamp: 1786800000" \
  -H "X-Signature: <hmac_sha256>" \
  -d '{
    "reference_id": "order-1042",
    "amount": 25.00,
    "success_url": "https://you.com/ok",
    "cancel_url": "https://you.com/cancel"
  }'

// 201 Created
{
  "invoice_id": 1042,
  "status": "pending",
  "payment_url": "https://arcaud.com/pay/01M0...",
  "expires_at": "2026-08-15T23:47:00Z"
}

Security

Built to be paranoid about your keys

Payment infrastructure gets attacked. Here's what actually protects your account.

✓

HMAC-SHA256 request signing

Every API request is signed with your private key — nothing is accepted without a valid signature.

✓

Anti-replay protection

Requests outside a 5-minute timestamp window are rejected, so a captured request can't be replayed later.

✓

Optional IP whitelisting

Lock an API key down to the specific server IPs you trust.

✓

Encrypted secrets at rest

Private keys are encrypted in our database, never stored or logged in plain text.

✓

Rate limiting

Per-IP and per-key request limits protect the API from abuse and brute-force attempts.

✓

Non-custodial by design

We can't lose, freeze, or misuse funds we never hold — payments settle directly to your own wallet.

Pricing

Start free, upgrade when you grow

Every plan includes every payment method — USDT, QvaPay, and every other gateway — no credit card required to get started.

Free

$0/month

Try Arcaud with real payments, no commitment.

Up to 10 paid invoices per day
All payment methods included
1 active API key
Hosted checkout page
Signed webhooks
DHRU Fusion gateway module
Instant Transaction Confirmation
Basic support

Get Started Free

Questions, answered

Does Arcaud ever hold my funds?

No. Payments are sent directly to the wallet address you configure — Arcaud only watches the blockchain to confirm they arrived. We never take custody at any point.

Which payment methods are supported?

USDT across multiple blockchain networks, plus QvaPay, Stripe, PayPal, Mercado Pago, and 25+ more payment gateways — all available on every plan, including Free, all configurable from your dashboard.

How do I integrate with DHRU Fusion?

Generate an API key in your dashboard and download the ready-made gateway module — upload two files to your DHRU install, paste in your credentials, and it's live.

How fast is payment detection?

Our detection workers check the chain on a short interval, so confirmations typically land within a minute or two of the transaction confirming on-chain — near-instant, fully automatic, and reliable every time.

Is there really a free plan?

Yes — up to 10 invoices per day with every payment method included, no credit card required. Upgrade anytime as you grow for higher volume.

Ready to accept crypto and cards, together?

Create an account and generate your first API key in a couple of minutes.